Hey there,

Hope you are doing great. If you see 11.3 x 1000kg/m3, which means, if we calculate it,

11.3 x 1000 kg/m3 = 113/10 x 1000 kg/m3

= 113 x 100 kg/m3, because the 0's are cancelled.

Therefore, 113 x 100 kg/m3 = 11300 kg/m3

The decimal is therefore, removed as we changed it into the fraction form.

Hope it helps!